Ctrellis90 is absolutely spot on - transplant from seed straight into your end game pot with good soil and just leave her. They don't need anything but time, a bit of water and some comfortable temperatures for the first few weeks. Less is more with nutrients. No HST, no topping and no cropping - au naturel grow! You can do a little gentle bending of the top to encourage side shoots, but that's all I'd advise.
Aside from the auto-factor, the biggest general growing tip I would give to a novice grower is "increase airflow". It took me at least two years of growing to realise just how important airflow is around your plants. Not just in terms of the obvious humidity and environmental control etc., but the air movement has a direct impact on bud density, yield, flavour, smell... In fact, everything I've improved in my grow setup since I seriously upgraded the airflow and lights has frankly been marginal gains.
By your 5th grow I'm sure you're getting into the groove of things anyway. Anything you've not seen before - just ask on here.
Enjoy!