Home brewing is a lot of fun. I've had some good successes after 10 or so batches, but also some poor outcomes.
One thing I've learnt is that primary fermentation can go on longer than stated on the packs. I normally leave mine in the first bucket for 3 weeks to make sure everything is finished. So long as you have a good airlock and keep checking the water level in it twice daily, I think you'll be fine. Normally fermentation stops in a week, but I like to leave it a lot longer to settle before kegging. From that point on, I follow the instructions as stated to keg it.
I recently tried a St. Peter's Cream Stout and highly recommend it to all home brewers. It's a solid kit, and if you want to experiment with it, try the below:
I recommend adding fruit, lactose and (if a dark beer) roasted cacao nibs to your brew. Fruit must be pasteurized - I heated it at 65'C for 30 mins in a pan - before adding to the brew. I used about 2kg of cherries in the Cream Stout kit above, whacking it in the primary fermentation at the start, and I could notice the flavour when tasting after kegging.
Lactose is also great, it gives a creamy sweet flavour and offsets the dryness you might normally get. Works in everything from IPAs (milkshake IPA) to Stouts (milk stouts). I think I'll use it in everything from now on. An alternative to this is maltodextrin powder, which is less sweet but also adds body.
Cacao nibs add a chocolate flavour, but can make the beer slightly more dry. Used in combination with lactose as above, they significantly boost the texture and flavour of a dark beer, to make a chocolate milk stout for example.
Anyway, I read this thread for tips over the years, so thought I'd share mine too! Cheers.