Kim,
Welcome to IIS!
Your enthusiasum is strong but be warned if you try to target too many things too early, it will only lead to dissapointment or continually buying addons that you may not fully appreciate at this stage
.
many of the girls and guys on this site will help and guide you and all I can really say is try and settle down to 1 target for now - eg the sun or the moon. Two fairly obvious targets.
For me, the moon was it as I could photograph it easily and learn more about field rotation, drift, exposure, focus etc. The moon is a really good learning curve on these important fundamentals and most rewarding - esp as you have a decent DSLR.
As for solar, your MUST get a filter - eg primary type filter such as those from Thousand Oaks. Check out Bintel, Staroptics etc.
Good luck,
Darrin...