Welcome to Fish Lore Davina!
API (liquid) Master Test Kit is what's most recommended on this site. As stated above the test strips and be hard to read and not as accurate as the liquid test kits.
The only thing you really need to be testing at this point is for ammonia, nitrites, nitrates and pH levels. The Master Test Kit gives you all of those.
Too, as Lucy mentioned, and if you haven't seen it already, you should read about the nitrogen cycle. It's crucial to fish keeping. Your readings should be as follows 0 ammonia, 0 nitrites and 5-10 nitrates. Most fresh water fish will adapt to the pH levels that comes from your tap once the chlorine has been removed. For removing chlorine most recommended is Prime and Amquel +. Nova Aqua is good for a stress reliever and to add slime coating to the fish.
Congrats on the new tank.

Again Welcome and enjoy the site.
Ken