De-mystify please

[Dave Reynolds]

Real newbie to the topic so I'm looking for some answers to a few basic questions.

Assuming I focus my time/effort (30-40 hours/week/diligent) in this area (tax sale investing) will those with experience please answer candidly:

1. 1.  Is tax lien/deed investing a huge 'learn' before making first deal moves?
2. 2.  Does tax lien/deed investing require generally longer or shorter periods of time than conventional standard real estate transactions prior to receiving income?
3. 3.  What is your one best 'referral' resource to learn and acquire the 'chops' it'll take to enjoy a decent living?
4. 4.  I'm now working in RE by myself; can this type of RE investing be successful without adding staff?

Thank you,

Dave