Hi, and welcome to the forum!
Looks like Betta Basics is a decent enough dechlorinator to use, but depending on the size of your tank, it may take quite a bit for each water change. Prime is more cost effective. You get more, and have to use less. So you can use it, but you will probably run out quicker than you would run out of Prime.
Do you have a good water test kit? This will take the stress out of cycling. API's liquid freshwater master test kit is really good. And it lasts a good while. The Betta Basics claims to neutralize the ph of your water, but that may not be necessary at all, depending on your source water parameters. I would suggest testing the source water out of the tap to see what you are working with.
Here's a link to the two sentence tutorial for cycling a tank. If you have more questions, please post them! And we all love to see pics of bettas, too!!!
Change half the water when either ammonia or nitrite approach 0.50ppm (alternately, 25% at 0.25ppm), or weekly, whichever comes first. Add Seachem Prime at 2-drops per gallon of tank size every day until cycled. That’s all you have to do. You can stop reading now. But there’s a lot of...