I am thinking of taking it to a bot server cuz I've never jungled before. I think I will up vote depending on outcome. But it is good so no down vote for sure.

I'll keep an eye before I vote since im not convinced yet. Your explanations for ganking/jungling, item selection etc isnt very detailed, feel very simple and to basic. You should either go more in depth, add pictures, or focus on your item selection. Like for trundle, duff has done a guide with miminum information but his build is very good. Theres other build with weird item selection, but they have good skill-items-role explanation to get the +1. In your case if you want more upvote, i would either go more in detail or re-work your items selection.

Items: I do agree, if i go Frozen mallet, i wont buy trinity. Unless i have a full build and want to upgrade. You could get warmogs instead and go atmas after. As far as frozen heart, if you dont like thornmail you should get Omen. It has a very nice slow with better stats for trundle. Trundle doesnt need the mana or CDR. His Q has 4 sec cooldown, to get to 3secs, you need 25% and its not worth the money for 1sec... Some are against the madred's if your not maybe you could explain why you chose madred over bloodthirster or witts end, or black cleaver etc. Have a section where you explain your choices.

I feel you have done some good work, but its just a little incomplete right now, so i'll hold my vote for now. Keep it up!

Eww, Honor Guard. Honor Guard bad. Put those points (and the 3% AoE reduction) into Initator and the CDR/level thing.

+1 overall a good indepth guide.

think you could use some more coding. for instructions, check out jhoijhoi's guide on making a guide. your item build has some issues though. getting a trinity force with a frozen mallet is just plain pointless. you dont need a double slow proc. either get trinity with a warmogs armor for HP or just do the fratmas combo. liked how you included a ganking section, so i also think you should add in a section about counter jungling. also turn on require comment to vote.

keep up the good work!

Very comprehensive for a first guide. You certainly spared no energy in explaining your thought process. Pictures in general (I've noticed) tend to massively increase the number of upvotes you get for no apparent reason at all, even if it's just random artwork, so you should give it a shot. Other than that, attempt to space out your paragraphs with a spare line in between so it's easier on the eyes and perhaps avoid just flooding the guide with colorful font. It's good for differentiating key points but when placed so closely together, it's really very strenuous to read.

As the other commentors noted, buying Frozen Mallet and Trinity Force in the same build isn't the best idea, but if it works for you, I can only hope that they gave it a shot before they mentioned it. I thought it was extremely detailed of you, once again noting the impressive amount of specificity you placed into your guide, to list the jungling times etc., etc. Very nice thought for new players.

Excellent effort, +1

You've got something good going here but I think you should make a few alterations to your strategy to really optimize your build. First of all, Trundle benefits more from runes of flat attack damage than he does attack speed. Having 6 marks of desolations and 3 marks of strength combined with 3 quints of desolation will give you a very strong flat 10 AD at level 1, which scales very well with your Rabid Bite as well.

For your first build, Frozen Mallet after Trinity Force is redundant as your already have the slow proc from Phage, and you'd be much better of getting a more tanky item liek Warmog's Armor to synergize with your Atma's Impaler.

Your second build lacks Triforce which means it lacks damage, the bottom line is you cn build as tanky as you like but no one will focus you if you don't deal damage, and trinity is bar none the most intimidating item you can build on him and should be purchased after wriggle's and merc treads.

Your last build is interesting as a potential support trundle but the madred's bloodrazor is better suited to someone with more attack speed and you really don't employ the passive magic damage as well as other champs can.

Just as a side note, try maxing your Pillar of Filth by level 13 and see how you like it. The increased slow and decreased cooldown make teamfights very scary for the enemy with up to two or three pillars per fight disrupting their positioning. Just try it and see how you like that change.

Overall good work though, +1 from me

Hey it's an ok start for a first guide, but I want you to read this guide:
Making A Guide

It will help you make the guide look better and present your info better.

Never get Frozen Mallet and Trinity Force in the same build, it's a waste of their passives. Choose one or the other, as one is for Tankiess and CC but the other is for more damage. The choice is yours. Other than that the build is ok, and once you learn BBCoding and such from the guide, the guide will look nice, too :)