1)STATS - What should i add ? Can i just go for STR n Vitality ?
You can, but your magic and ranged defense might be lacking in the end.
2)SKILLS - Would i have enough skill points? Can i max out all the skills i want? Suggestion on wat to learn plz (Anyone recomand to learn LOCKPICK ?)
You can easily max out 2 or 3 combat skills, and put points in a few others. Lockpicking is not necessary, but if like me you hate not beeing able to open all chests, put points in it

3)POTS - Only can be obtained from NPC ? (quite limited) How i do Alchemist anways?
You can't become an Alchemist. There is one (hidden) in the town in broken valley, and later on one in your tower.
4)Mind Reading - This costs EXP , will monsters keep spawning out even after i kill it? IF not how i cover up for the EXP lost due to this skill ?
The XP you get depens on level difference between you and mobs. So once you get to lvl6-7, you can mindread everyone, the debt should be covered up quickly. There is no respawn of monster (unless in a few places in FoV).
5)Style of Combat - Should i go for Sword n Shield ? Is 2handed weap any good ?
Depends on what you like. I love 2 handed weapons, as it's good AOE damage.
6)Combat - not having a hard time since well im a Warrior its rather tank n do decent damage but im actually just tanking all the enemy damge is this a proper way of fighting in the game? Any suggestion or advice ?
Dodge. And dodge again before smashing the ennemy in the face.
You can dodge most ranged attacks if you time it well.
And having a ghost is great, as he can heal you.