Hi Kev,
Welcome to the world of steel. I am new to steel but played Uke. guitar and dabbled with my fathers banjo. All the advice you have had is all valid, but like all advice you have to work out for yourself what works for you...sometimes it is the hard way, just trial and error.
If you Google search for: Joe Wright and Sierra guitars beginners lessons (12) of them. He is some showman but the video's are brilliant.
Personally I wouldn't worry at this stage if things aren't quite right, get to know the LS make some noise and just enjoy the experience, if you can find a teacher at the right price good, if not this forum is the best in the world and there are some great players out there who will spend lots of time giving you stacks of free info and help with tabs...they helped me and still do. It's a small world we live in and questions will always be answered, with all the years of experience of the players.
Hal Leonard Lap Steel Guitar is useful but very limited. It uses open tunings but it is a start, no C6th. Stacy Phillips, Hawaiian Steel Guitar is also very useful mostly in Hawaiian tuning but there are several tunes in G6th which possible to transpose into C6th...if I can transpose it you will be able to. I had to ask questions to do it, but it is possible.
Oh by the way, I can't get on with finger picks I just use a Delrin thumb pick, but I will accept that there is a slight loss in brightness of tone, but then Derek Trucks has played slide guitar for years with some of the best bands in the world without any picks at all...it's down to your preferences on what you hear when you play.
I will now wait for the criticism to flow!!!! Ha Ha
Have fun enjoy what you play and play what you enjoy.
WineRider (AKA Maurice)
Home made LS Modified Peavey Rage, no brain and all finger and thumbs.
http://www.winerider.com