Its addictive as fuck mate, you've got to have the time though and it takes a shit load of time, especially getting started.
Choosing a good spot is vital. Theres a lot to factor in such as the logistics, chances of being rumbled, the quality of the soil if growing in the ground, the amount of direct sunlight they will be getting, wildlife, water sources etc.
Unless you find good nitrogen rich soil (nettles are a good indicator) id suggest growing in pots. Buy seeds that are suitable for our climate, we used Dutch Passions Frisian Dew/Duck, Sour Diesel, Durban Poison and a couple of others i cant remember now. Dutch passion is a good choice of seedbank though.
Start the seedlings off indoors around March and veg as much as you can indoors before taking them outside.
Canna Nutrients/Advanced Nutrients are always a good choice, or you can just grow organically, you will defo notice the difference though.
Like i say, once you start its really addictive. We started off with loads of enthusiasm but had to scale back halfway through due to other commitments. If you go on YouTube and watch the likes of UK Field Ninja and a few others you can get a feel of what is possible.
Dont listen to what people say, theres massive potential for outdoor growing if you put the graft in and do it right mate. Its a myth that outdoor stuff isnt potent as well, the Frisian Dew and Durban blew our heads off, and after a good cure it smelt just as good as indoor. Granted it well never have the same bag appeal as good indoor stuff, but if its for personal consumption it will definitely do the trick.
Theres a shit load of stuff iv not touched on cos i could be typing all night, but if you want to know anything just give us a shout and we will help if we can :)
ULC