m_hoop wrote:
Are there any budget-friendly trainers that will work for a newbie? (if I'm not allowed to ask that, my bad).
There are several classes of trainers.
'Dumb' trainers have a fixed resistance curve and the amount of effort you need to put in is proportional to the rear wheel speed. The resistance element is typically magnetic (basically a shorted-out electric generator), a fluid pump, or an air fan. The air units will be noisy. Some of the magnetic ones have adjustable magnet positions and that can help you find a suitable range of resistance. Some of the fluid units have a resistance curve that is similar to what you might encounter while riding on the road, such that the 'distance' and 'speed' that you see while riding have an approximate relationship to being out on the road.
The better trainers have a wide base, a stout frame mount, and a good warranty on their parts. I have used a Kurt Kinetic "road machine" for years and it has been flawless. I know of some that developed noisy bearings - Kurt warrantied those, no questions asked. Saris and others also make good fluid and mag trainers.
That gets to the second useful/necessary part of having a trainer - recording your training sessions. In the absence of a power meter, you can use a rear wheel speed sensor to determine wheel speed and total wheel distance. Many of the established brands of trainers have a known power-speed relationship (within +/-15 percent, anyway) and training apps can use speed input from your data records to arrive at an estimate of the total work done. So in order to take advantage of that, you need a bike computer that can read and record data from wheel speed sensors. Bontrager, Garmin, Saris, Wahoo, and others make bike computers and sensors that will fit the bill there, at price points from under $200 to over $600.
Moving up the food chain from there requires either a power meter or a 'smart' trainer, so that you are directly measuring the effort you put in. I would suggest that is not justifiable at this point but you should certainly look around and see what others in your area are using.
Less is more.