Ask your vape friends for their empty e juice bottles. I found 100 1ml syringes on amazon or ebay for 10 bucks, they are great for making small batches for testing or for accent flavors in larger batches. You'll need 3 or 5 ml for your larger batches, plus a large 20 for vg/pg. If you can, buy bulk sized (gallon) VG and PG, they will last. The initial set up is costly but saves in the long run. When you have recipes and ingredients, buy the larger bottles (30ml) of flavors for the ones you'll use more (ex: strawberry, vanilla custard, blueberry, sweet creme etc..) It's about 2 bucks for the small bottles, and only 4 for the next size up in most cases. I use 100mg nicotine, it works really well and uses less, just treat it like you would drain cleaner, don't get it in your eyes and wash hands often.
You can start for much less and try it out to see if you like it. Read about "steep" so you know what to expect on fresh made juices. DIY is a fun shineyitis. Other than that...READ...READ...READ....