Divide the packs of meat up, otherwise you'll end up with 5kg of chicken thighs and 2.5kg of mince frozen into big blocks that take forever to defrost and then need to be used up at once.
Things like solid lumps of meat of meat with bones in need to be defrosted in the fridge or they'll still be frozen in the middle when you think that as the outside is soft, it's going to cook all the way through when it's so frozen that by the time the outside is burning, the middle hasn't even defrosted.
Slices of cooked meat frozen with a sauce/gravy will defrost fine in the microwave.
TBH, you best bet is to start slowly. So try getting used to using the already frozen individual portions of meat/mince in the supermarket and follow the instructions.
Veg is cooked from frozen, usually in either the microwave or straight into boiling water.
Cooked jacket potatoes can be microwaved from frozen and a precooked block of chilli to go on it is usually better microwaved as it can be too thick to defrost before it catches on the bottom of a saucepan unless you remember to take it out the night before to defrost in the fridge.
Get lots of different frozen veg and fruit. Trying frozen onions and herbs/spices like ginger and garlic works really well for a lot of people.
Leave one drawer available/clear for freezing things flat. Splodged bags or hard containers take up too much room and having somewhere you can easily place a tray (lined so things come off it easily) to freeze stuff like fresh pineapple separate rather than in a clump - then take it out and put into a bag for freezer storage.
Always remove the additional packaging/boxes. They take up too much space. Cut the name and the instructions off and attach them to the internal packaging/in the bags.
Label everything. You will forget which shade of red is bolognese and which is beetroot once it's in the freezer and looks a completely different shade the following week.