How do I practise Vipassana and Samatha through Anapanasati?
If you are focusing on the breath sensation then it is vipassana and if you are focusing on in and out breath as a concept then it is samatha. There are many methods like mahasi, sunlun, goenka so I suggest you try it. I don't think you can reach jhana if you are just focusing on the in and out breath because it's not easy to stop thoughts from arising. That's why samatha and vipassana should be developed together. You should be aware of what you are doing all the time. Always be aware of sensation of touch.