You can take CBD oil in Many ways, But i will tell you which way is the best and will help you achieve the best Bioavailibility.
Highly researched article on CBD intake:
Here are some methods i recommend:
1) Sublingual: Under the tongue method.
2) Edibles: Gummies, pills etc (Big fan) But slow in working.
3) Vaping: Best way to consume CBD oil.
4) Topical: Slowest but helps in external pain and for beauty purposes.
I use Full Spectrum CBDistillery. If you want to buy