My friend, Ingestion methods are all over this site as well as instructions on how to acquire the spice from fairly readily available materials. You will end up doing your own extractions , so start with reading the different extraction teks.
you tube... meh, look for answers and guidance here.
as far as how often do you do the deed , ..that's a personal choice, depending on your mind set and environment. for me personally , once a month is a nice way to experience , give me time to put whatever lessons learned into practice. I have read some on this site partake nightly , certainly weekly.
Its up to you.
I think you will find that it is such a heavy experience , that you will want to take some time to adjust between sessions.
oh boy just wait, wait to you see what is behind the veil.
If Lsd was a fountain of inspiration and spirituality for you, Dmt is an Ocean of eternal bliss.
..as an old head myself, I can tell you ~ im excited for you to dive in.
just you wait and see ~! Ha ha~!
best-shaman