Chad, welcome to the forum, and to the wonderful world of Krags!  Be careful... they are quite addictive!

You have a very nice rifle there.  If you choose to shoot it in any vintage rifle competitions (like so many of is do), we can certainly help you figure out what to do, what loads we each use, etc.  Also, we are all here to help you with anything else you'll need to get started.  Most of us reload, rather than paying the high cost of factory 30-40 ammo.  Reloading for the Krag can prove very rewarding!

As for cleaning, remove the bolt and clean from the receiver end.  To remove the bolt, lift up the extractor (running along the top of the bolt) slightly with your finger, and rotate the bolt to the left and remove to the rear.  Insert the bolt in reverse fashion.  You'll need a longer cleaning rod for that 30 inch barrel, but cleaning from the receiver end will help keep that muzzle nice and tight.  (at least, that's how I do it)

I have the 1902 sight on my 1898 rifle, and I like it better than other sights.  I use the flip-up "Sgt Peep" on the rear of the sight, and I shoot nice tight groups in my matches!

If you need any help or advice... just ask.  There are plenty of great people here willing to help!  This is a GREAT forum!

Paul