Markku Roinila has updated his Leibnizian Resources page, which links to Leibniz texts and all sorts of other online material. That link goes to the front page, which lists the many updates. I notice that the Texts page includes links to all the online Academy edition volumes, including the preliminary Vorausedition and transcription files.
Secondly, it’s amazing what you find when you type ‘Spinoza’ into the youtube search box. Among other things, this video of a talk by Susan James, “Why Should We Read Spinoza?”, in which she talks about Spinoza’s theory of emotions, and uses that to think about the emotions of the historian of philosophy.
Thirdly, this post by Miriam Burstein, Updated Advice to Graduate Students on the Fine Art of Buying Books (in the Age of Digitization), is certainly relevant to the history of philosophy.