Many people say Lanemumu is useless, but its not truth at all. I play Lanemumu more often than Junglmumu, no matter if solo or duo, Mumu is great either way.

Order of your spells depends mostly on enemies on lane you are on, but i recommend to take Bandage toss every time possible, because it lowers cooldown, so you have chance to cast and stun several times in one fight.

Since you have teleport, recall to base asap as you got 365 g for Philosopher stone, that will ensure you great gold farm even if you dont get too many cs. Cause you have Toss, you dont need to have boots so quickly. With philostone you can stay on lane very long and very easily, till you get money for Heart of gold + basic boots.

I presented items in order i usually buy them, but as tank you (your build) are highly dependable on enemy team. So if they don't have much AP, you don't have to buy really expensive Abyssal so early and buy Sunfire instead. First def item i buy is in 90% games Glacial shroud, because it gives you important mana and cooldown reduction as well as armor against AD's.

If the game is going well for your team, don't hesitate to buy more AP than defense, like Rylai, Rod of Ages or Zhonya's hourglass. These items give you AP, so you are killing machine with your spells, but it also gives you HP/armor which you really need to tank some.

I have masteries for solo lane here, these are my classic def solo masteries, no wonders here. More exp for fast ulti, maximum HP regen and improved teleport. Easy

When duolaning, i switch to 9-21-0, taking AP/lvl + crit and , reduced cooldown and spell penetration.