Filters vs no filters is like Canon vs Nikon -- an age-old discussion (dare I say, passionate debate?!) among photographers! LOL! Regardless of whether or not one puts a UV Haze filter or some other kind of filter over their lens they really should always, always use the lens hood which comes with their lens. The lens hood shades extraneous light from coming in while shooting and can protect the lens if the camera and/or lens is dropped or bumped.
I've done both -- used filters and not used filters. Yes, they do keep one's fingers from inadvertently mucking up the lens itself and they can be the ones which take the brunt of an inadvertent bump and/or scratch rather than the lens, but they also do add an extra layer of glass between the carefully-designed lens and its intended subject. Also if the photographer tends to use a lot of other filters such as the so-called "poor man's 'macro'" -- i.e., closeup lenses -- that Molly mentions, or frequently puts an ND or polarizing filter on for landscape shooting, that stacking and adding-removing of filters can be a nuisance and potentially problematic and may even cause vignetting.
Everyone has his or her own system when it comes to organizing their images. I prefer to set up my own hierarchical structure and I do give each folder a name, each file a name, each image a name -- and I try to make it somewhat meaningful (at least to me). I rarely need to search for any of my images but when I do, I have a pretty good memory and often will think, "ah, yes, I've got an image of [whatever the object or subject may be] that will work just perfectly in this week's competition (or in the Photo Association Game thread)." Other people like to use keywords and develop a catalog with Lightroom or other programs which offer Digital Asset Management (DAM).
As for camera straps -- somewhere around here in the Digital Photography section there is a thread about camera straps, where everything from wrist straps to devices such as the Cotton Carrier (?) which cradle the camera against one's body are discussed. I think the thread is called "How Do You Carry Your Camera?" or something similar. It's a very useful thread as it discusses the pros and cons of the different approaches and also the different brands. For years I used Op/Tech straps and it was only this past summer when I was preparing for the arrival of my Sony A1 that I decided to make a change and now I am using the Peak Designs system, which I'm finding very versatile and useful. I never use the camera strap which comes with a new camera -- usually those are stiff and uncomfortable.
Backing up one's image files is an absolute MUST!! Some people use a NAS, other people use Time Machine, Some use Carbon Copy Cloner or other backup software, and others of us do things manually. I fall into the latter category. I use external SSDs for this purpose, plus I have a couple of older HDD with earlier archival backups on them. It's been a gradual process over the past several years of converting to external SSDs from the old HDDs. Each month I take one set of external drives with my backup of my important files (documents, music, movies, etc.) and my important image files to my bank safe deposit and swap them out with the set that is in there. I bring home the older set and update it and the following month it returns to the bank..... Upon occasion when I have just added some really important files I'll take a freshly updated set to the bank at some other time during the month as well (say, after I have prepared my income taxes and have duly received my refund) so that the .pdf of the prepared tax files or other important new material is immediately safe from any sort of crisis that might happen at home.
Ah, one more thing, as Steve Jobs was fond of saying..... Do you have a tripod? How will you connect the camera to it? Does the tripod have a quick-release thingy? if your tripod uses the Arca-Swiss system, be sure to get the right type of plate for the camera body so that you can use the camera on it.