Looking for IT assistance for a minor computer issue

I'm in Ireland and need help with a small IT task at home. The issue is a slow laptop that sometimes freezes, plus I’d like a quick cleanup of the hard drive and some basic optimization tips. I’d also appreciate guidance on improving Wi-Fi reliability around a few rooms. Please share your availability, any preparation I should do, and whether you charge by hour or a flat rate. I’m hoping to find a friendly technician who can explain things clearly and avoid technical jargon.