QUICK INTRODUCTIONFirst of all I would like to say that this is the first time I make a guide, so it will not look as good as the others:p. It will be a quick guide explaing everything and if im missing something let me know^^. I still dont know how to use the functions good here so it will suck a bit, but i hope you will enjoy the guide. This is a solo top hecarim, he can also be jungle i tryed it few times with good results, you will have to just changed a mastery point to get the upgrade for smite.
MASTERY

BUILD ONE
First of all my mastery tree as you can see is a tanky one since he gets beatin up pretty fast if not played well. This way it has more survivability and also will have extra damage at the start since you will have both increase attack damage from your movement speed from 3x initiator also 4x swiftness which is like increase in speed just at the start to 5% and helps with attack damage.

SKILL SEQUENCE I start with rampage then spirit of dread 2x then devestating charge. I upgrade spirit of dread early in the game which helps me in control of the lane and with almost full health all the time. After getting my Onslaught of shadows, then i upgrade my rampage which is the right time to start getting many kills.
RUNE BUILD
My rune build is pretty much like most of hecarim guide's build. Help in survivng more and do more damage. With the 4.5% of movement increase from quintessence of swiftness adds up to the mastry increase of speed, which lets us start at 9.5% increas movement speed.

ITEM PURCHASES
I start with a boot and 3x health potion to help me incase i go low on health. I go back to the base when im low on health and mana and got no health pots. By that time you will have enough gold to up grade your boots to Boots of Swiftness, and mayb a long sword, but make sure to go back with some health pots again, maybe three would be good. After that i get The Brutalizer and vampiric scepter. AFter that i get Youmuu's Ghostblade and that is when you gonna kick some real ***, il explain after this how to play hecarim. Then you get Hexdrinker which helps alot in making you last longer in fights. After that continue getting the stuff with the given sequence. That 6th item you get which is your last, depeneds on what you need. If you need armor/magic resist depending on the team your facing. Another great item will be Force of Nature.

HOW TO PLAY HECARIM
I try to upgrade sprit of dead to last longer at the start and farm minnions faster. HOW TO USE SUMMONER SPELLS. You should ALWAYS use the Ghost and Teleport wisely since it will get you many kills. When you go back to the base dont teleport back only if your tower is getting attacked. I usually start to gank after i get my ult but also when bottom or mid lane is getting pushed. When bot is getting pushed i teleport down and this is what i do, i will try to tele behind the enemy, use Devestating Charge and push them back and with the help of bot, thats few easy kills. There is a nice way i use Devestating charge is to stop enemies from escaping. when i usualy click on it, i use my ult on them which makes them fear, then i go and push them back, this way they will be pushed further back and also will get more damage on them. With use Ghost in those ganks will help alot in securing the kills.
Spirit of Dead can be really OP if used in the right time. In team fights if I will engage first, i go in with devestating charge, by that time they will all focus me, when my health is around half, my team will be already attacking them, that is when i use my ult on them, which fears them then with using spirit of dead, i'll get back with full health and last much longer. In team fights i usually use my ghost and Youmuu's Ghostblade which increase my attack damage alot and burst alot of damage. Alot of the time also when theres an enemy with low health hugging tower, i would start with devastating charge, use my ult to fly over them and push them back, which normaly will kill the low health champion and being able to run away.

here are some sample videos i made Play Video Play Video Play Video Play Video