Congratulations to you! It is a brilliant camera and extremely capable. After a few days with mine, I took the decision to divest all my Canon gear as the AF was superior on the OM-1. It takes a bit of setting up and after long chats with OM-System, I am now running 1 or 2 day training sessions on the camera with their support. In terms of processing, OM Workspace is like most camera-included software - it works well, but very slow and not intuitive. Camera designers are unfortunately not post-production software engineers. Nikon's NX is the best of a rather mixed group. Othes have suggested DxO which is good software. By my detailed testing it is excellent great for sharpness and noise, quite poor though for colour. The cloud version of Lightroom is relatively simple to use, works beautifully with OM-1 files, stores everything securely and allows you to access and edit on Phone, tablet, computer or on a web page. It also gives you RAW shooting from your smart phone, if your phone dates from the last 5 years or so. I find most of my training clients find it easy to use. It is a subscription £9.98/ month or an annual payment, but virtually everything is and the functionality is excellent. In the interests of trasnparency, I work with Adobe in a very technical capacity, developing Lightroom (both versions) and Photoshop. I get no benefits from recommendations. I include Lightroom training with my OM-1 workshops.
Nick.