Try University Flake before you bother with any of the other Petersons...
Your pipe needs to be broken in before you begin to sense much flavour at all. Petersons take a notoriously long time to break in, by most accounts. Keep that in mind. You can buy Missouri Meerschaum corn cob pipes online for an economical price - give that a try and see if it gives you any instant gratification. Then return to your Peterson and smoke that pipe until it becomes to come around, taste wise.
Keep in mind that moisture management is crucial for successful pipe smoking.
- In my experience, each and every pipe tobacco needs some drying time straight out of the tin. It could be five minutes or a full hour, experiment and you will discover the optimal balance of moisture/dryness for each blend.
- Smoke slow and in an intuitive fashion. By this, do not smoke at a set cadence like a metronome but in response to the flavour/burning rate/bowl temperature et cetera. It is not "ten puffs per minute" but as many as it takes to keep the fire burning without scorching the tobacco and/or your mouth... You should be able to gently sip the smoke from the pipe and the tobacco should keep itself burning for the most part, with minor maintenance such as tamping and relights along the way.
Patience, lad! Patience!
I do advise, though, that you get an authentic MM cob to give you a glimpse into the pleasure of pipe smoking. (I recommend the Country Gentleman) I think briar is an unforgiving mistress for beginners...