I cannot comment on the first question. I am an amateur hobbyist btw.
I stared out with coins because I thought that they could be more impromptu, while still requiring a high level of skill (everyone and his dog knows a card trick, and everyone knows about set-up decks and gaffs in cards). The impromptu nature is somewhat undermined by the fact that UK coins are not good, and EU coins are even worse. Half-dollars are now scarce in change in the US. I read of a US magician performing for college students recently and they asked to see his half-dollars as they thought they were foreign coins.
I too started with Bobo – big mistake. When will people stop recommending Bobo for beginners, and stop calling it a Bible?
Bobo is a very good, cheap resource for routines once you are at at-least intermediate level. It is hopeless for sleights. The diagramming is poor even for the time the book was first published (early ‘50s) – they were already using enhanced photographs for other similar publications at that time. MCM is Bobo’s personal, and somewhat idiosyncratic, collection of coin routines. Curtis Kam (Magic Café) points out that at the time the MCM was published Vernon was already a living legend and was regularly lecturing to magicians, yet there is only one reference to Vernon in the MCM index.
I bought tapes of David Roth on eBay (Easy to Master series) and I really felt I was starting to improve. I would recommend these to anyone. I augmented these tapes with Ian Kendall’s Basic Coin Magic (sleights only) -
http://virtualmagicshow.com/vsession/index.php. Again something I would highly recommend, not only for coins.
Ammar’s and David Stone’s DVDs are also supposed to be good, but I haven’t seen them. Dan Watkins site -
http://www.coinvanish.com gives a good summary comparison between the Roth, Stone and Ammar DVDs.