You don't need two apples if you live where there are people with gardens, there are usually enough people around you for their apples to pollinate yours. Unless you live miles from anyone else.
And conversely, next year's season actually starts on Monday with the Autumn Equinox. which means that your garlics can go in any time after Monday and be ready next June.
My top tip would be though, to plan plan and plan a little bit more. Start with a small space and, if you have never grown anything before, learn how to do that well. And then expand once your skills do.
I'd recommend garlic, spinach and winter lettuces go in now. And Just set up enough areas to grow those over winter.
Then in the spring, grow peas, and a few weeks later, and sow tomatoes and French Beans - if you choose dwarf peas and beans, and bush tomatoes, all you have to really do is to stick some sticks in here and there to give them something to lean on. And you will get decent crops from them whilst you are thinking about what else to grow. Then add in a couple of courgettes and a cucumber early summer where the peas were as they crop earliest, and some larger canes to tie the cucumber in and you are already cooking on gas.
But before you do, work out how you are going to grow. is it straight in the ground and if so, what is the soil like? Are you thinking of raised beds in which case, what is your budget? I now grow trees, flowers and shrubs in the ground and veg in pallet collars filled with topsoil, as i lost so many veg to pests in the ground, it is so much easier to contain them in raised beds. I would never attempt veg in the ground these days, and that's from someone who is paid to teach veg growing in schools and colleges and had a community garden for years.
www.google.com/search?q=pallet+collar+raised+bed&safe=off&client=firefox-b-d&sxsrf=ACYBGNQHs_y8Vm7McHZ3t4hDRIwa29vqGg:1569062239234&tbm=isch&source=iu&ictx=1&fir=EkfJqz6raLmM_M%253A%252C24Aca9P9DBYZAM%252C_&vet=1&usg=AI4_-kQ3idMw_hY7pCZHLuqkXXIYyMaUYg&sa=X&ved=2ahUKEwjzqZmr3OHkAhU7TxUIHXVCDE8Q9QEwBXoECAcQDg#imgrc=EkfJqz6raLmM_M: