I'm going to try MP pretty soon. Do you have any general purpose army compositions I could use and learn on?
There is no real definitative army lists out there, so you have to tailor your army to what your opponent's faction can bring.
Elves, all kinds, and beastmen tend to bring skirmish cav, dragons, low armor infantry and many units of archers, so chameleon skinks and skink skirmishers are great there. The name of the game for beating them is backline disruption.
Temple guard work wonders against beastmen, you only have to beware beastigors, devolve and cygors. Also dread saurians are really good against them too, they shread minotaurs and all their infantry, just beware you don't get caught up in chaos spawn since they never break.
Dwarfs and empire you need to rush most of the time. Empire you wish to go wide with and try to overload as many flanks as possible with saurus mixed with skinks, try to use outflankers such as rippers and the saurus knight ROR. Dwarfs you need these 6 units: ancient stegadon/eotg, saurus warriors, red creasted skinks, skink priest beasts, rippers and kroxigors. Skinks and saurus trade well with all the infantry, stegadons, rippers and kroxigors are used to win the frontline and disrupt the backline and the priest summons manticores.
Tombkings rely almost exclusively on their ushabti and sphinxes to win, so the knight ROR is great here for running the ushabti down. Carnosaurs are almost a must for dealing with sphinxes and the like. Skink priest of heavens for windblast and curse of the midnight for killing of their infatry quickly, and the curse is great if the TK invested in an elite frontline.
VC only work when they have monsters, so beware Dragons, terrorgeists and varghulfs. Invest almost always in a oldblood on carno and take plenty of saurus spears and maybe a second carno. Take a skink priest of heavens with harmonic convergence and curse to improve your monstermashes. Another battle where Dread saurians work wonders since it's pepetual poisen attacks will often keep them from running away, and if you can sandwitch one of their monsters between the dread and the oldblood, it will die in seconds.
Skaven, this one is tricky since it really isn't favorable at all, unless you are on a map with some foliage and cover. They will almost always bring a gunline of 2-4 jezzails and what not and have a cheap frontline bolstered by rat ogres. Saurus will trade in the frontline quite well, have some skink flankers and try to use saurus knights and rippers to get into the weapon teams. Skink priest with a manticore summons also do wonders here. Kroq-gar is a very good pick here since he can charge in and relocate very quickly with his swiftness of Itzl, he can rapidly go from disrupting the backline to help winning the frontline battle.
This is all for now, might write a few more later.
. In the and a Starpriest killed more people in melee than him 
. Also Starpriests are weirdly good against infrantry, no idea why oO
