Need general IT help for troubleshooting and setup, Dublin

I'm looking for a friendly IT person who can help with a mix of tasks: diagnosing slow startup on my Windows PC, organizing files, setting up backups, ensuring antivirus is up to date, and configuring basic email and printer connectivity. It would be great if you can explain steps clearly and avoid jargon. I have a desktop computer, a laptop, and a couple of mobile devices. Preference for someone who can work onsite in Dublin or nearby and can come with basic tools. If you can also provide a quick short-term plan and an estimate for ongoing support, that would be ideal.