I made a Sinistrope-Infiltrator. (THIS POST MIGHT BE CONSTRUED AS SPOILERS!!) But when I started, I went into Vagrant first. That way, you have stealth (which gives you a great heads up for everything but wolves) and you can use your stealth focus to get closer (especially with enemy archers) - then, the vagrant gives light armor and potion use bonuses. Sinistrope will also give you dual death rays and reduces the health cost on them, and with focus activated and a skeleton buddy up - I kill things pretty fast with a good level of survivability. It also lets you eat the corpses you make to regain health, mana, and stamina. While early on, you will need the potions to avoid dying (Ive used 3 ambrosias so far) - when you get good at stealth/pet/rays of death - you dont need healing during the battle as much. I also put my points into Light Armor, Sneak, Archery, and one handed at first - though I have to say power attacks with two handed weapons is the bomb sometimes. I'm not going to put any points in Two Handed though, as I feel its more of a beginner advantage that can be outdone by the Sinistrope and Infiltrator trees. Also, handicraft is good to get to 26 by around level 10-12, and once you get past level 4-6 you want to increase entropy and psionics. You can probably do just entropy if you dont have the funds to do both, as I dont use the fear spell I have much. But its a good panic button, hahaha get it? Panic button? Hahahaha.
{EDIT} Oh yeah, at the very start - the life absorption spell combined with a one hand weapon does really good with the above vagrant build. It becomes less useful after 3rd or 4th, but you can zzzzap them with life absorption while backtracking and by the time mana runs out, you can usually finish off whats left with your 1h weapon. After 3rd or 4th, I recommend swapping to a 2h weapon to finish things off like trolls and what have you. Around 5th or 6th, start using summons. I guess you can also do that earlier but a beginner is better off keeping the tactics simple at first.