Constipation is my only side effect. Eat prunes, take fibre gummies, have the fybogel in, etc if it happens to you!
Use the Shotsy app, useful for tracking everything.
Take 'before' photos and measurements. You'll hate them at the time but be grateful for them later.
Get insulin syringes so you can use the 5th dose.
Order more needle tips (the ones that come with the pen) if you're planning on using smaller doses, I started on 1.25mg so needed them, and I'm going to take 3.75mg out of a 5 pen too.
Don't obsess over the scales. I gained 2 weeks but overall I've lost 2 stone in 10 weeks. I was so sad the first time I saw the gain but the following week it was gone.
Plan your jab day carefully. I take mine on Sunday night, because I want the most suppression during the week as I struggled on work days not to eat all the time and resist all the treats, and then on day 6/7 (Sat Sun) I can generally eat a lot more as the suppression wears off. This works well for me, so I can eat and enjoy going out etc on the weekends with my family.
Track your calories at first. I use Nutracheck and it's excellent. I tend to eat a lot of the same foods now so don't use it most days anymore. I eat around 1100-1200 calories a day now.
Watch your protein. I drink a clear protein drink made with powder from My Protein every day, they're great. Taste like squash. I also eat eggs sometimes, and lots of chicken (I like the pre cooked flavoured chicken you get, my current favourite is Tesco's greek gyros but I also like the sweet chill). And cottage cheese can be your friend too.
Drink water. I don't. Hence the constipation I think! I do drink the protein water in a 1l bottle though which is something.