Bike work stands, but depends on storage and budget I guess. How do you mean slips, does it slip off back to 2nd or slip as you rotate the cranks. This is a bit basic but I presume you are not using large front large rear (known as cross chaining) as this puts the chain at its most extreme angle between front chainset and rear gearsNeed to adjust gears, lots of slipping when trying to use largest cog on rear, need to hold bike somehow so I can tinker with it
That sounds like a worn chain ring.Slips as I rotate cranks, middle at front
... and now, just 20 days later, you're up for this:Am 53, overweight, cycling for first time in 25years, have a Kona Jake bike, all seems a struggle, feels alien
How good is that?Its time to go further, only fear is holding me back, 30 miles, not far but have to do it