Just a quick basic guide to get you started at low stakes nl HU games.
BRM/TABLE SELECTION/Moving Up
You want at least 50 bi at lower limits to overcome the high variance of hu play.
Move up when you have at least 50bi of the new limit and you feel you have beaten the current limit. Make sure you have played many hours and hands before you move up.
Table selection : Stay away from regulars. Easiest to do this by just starting/joining your own table.
Make sure you are only playing against people who buy in full. Sit out is your friend. Just sit out until they either fill up or leave.
When you finally do move up try not to change your play too quickly. If the way you previously played seems exploitable by better opponents slowly vary your play not trying to add any over the top bluffs or hero calls.
Strategy
In heads up play your overall game plan should roughly be like in every game of holdem to play as many hands as possible in position whilst trying to lose as little as you can out of position. This is accomplished by opening a wide variety of hands in position and folding alot from the bb.
When starting out with hu play i would adopt a raise or fold strategy in position.
When raising in position against a full stacked opponent i would go with the standard 3bb raise.
Reraising i would go with slightly higher than 3 times his raise eg. If i was playing a .50/$1 table and the button raised to $3 i would reraise roughly 10-12$. If you were to reraise below 9$ your opponent will be priced to call with any 2 especially with position. If you raise much heavier than that you will lose all action and force a reraise/push or fold from your opponent.
If you find yourself in a 3 or 4 bet pot you are looking to get all your money in with TPTK or higher and any draw oesd+.
So to sum it up Make your Money IN POSITION whilst trying to lose as little as possible from the BB
Starting Hand Guide
These will vary opponent to opponent as you will have to be continuously adjusting your ranges to their play style
Button/SB: To start off i wouldn't suggest raising every hand to keep yourself out of tricky post flop situations. We will still open 60% or so of our hands.
I would raise with :
22+ / Axs+ / A7o+ / K8s+ / KTo+ / Q9o+ / 34s+ / 45o+ / gaped 46s+ / Gaped 57o+ / 2gap 58s+.
If you are raised 3bets or more then reraise with AK+ JJ+ and call an allin if your opponent goes over the top.
Call with any pockets 22+ / 67s-910s / j9s-j10s / AQ / AJs+ / KQ ( I would personally prefer to call with hands that will get you into little trouble as possible post flop so i would fold hands like A9 AT AJ KJ QJ)
Once again only proceeding with the hand with TPTK 2 pair or better or a good draw the hands you are calling with will let you either flop big or get away cheap.
BB
In limped pot raise 4bb with A10+ 88+ KJ+ J/9+
3bb Raised pot reraise TT+ AK AQ and occasionally reraise with smaller suited cons like 89s to mix up your game.
Call with 22-99 A10+ k10+ 56s+ 67+ 68s+
Throw away most your trouble hands like small aces kings and Q's when you are out of position.
This is just something really basic to play around with yourself and build on.
At the moment i just churned this out quickly because i noticed alot of interest in hu games. I will edit this post and make it a little more readable if thier is enough interest.
Will add a little for post flop and betting lines if i could be bothered to add onto this. Feel free to comment but remember this is ment to keep your decisions fairly easy and out of trouble
it's very satisfying