On hackspace.raspberrypi.com, find the latest issue number of HackSpace magazine and its cover feature. Then, determine how to download free PDF versions of past issues. State the latest issue number, its cover feature, and the method for downloading free PDFs.
Navigate to 'hackspace.raspberrypi.com'. Identify the section displaying the latest issue of HackSpace magazine. Extract the issue number and the main cover feature of the latest issue. Locate the information or link related to downloading free PDF versions of past issues. Synthesize the collected information into a concise answer.
State the latest issue number of HackSpace magazine. State the cover feature of the latest issue. Describe how to download free PDF versions of past issues (e.g., 'by clicking the 'Download PDF' button on each issue's page').