Getting started and succeeding in FS25 is all about moderation.
1. Budget for what you want to do
2. Lease short term equipment - Harvesters especially - Buy this equipment once your farm is making money
3. Buy long term equipment - Tractors are going to put on huge hours
4. Chickens, Sheep and Bees - Make good money and require little effort
5. Focus on one or two crops to start with.
6. Double crop Sorghum in Spring an Grass in Autumn
7. Silage is always a good money spinner.
8. Start small and grow from there, big equipment come with big bills
9. Avoid AI if you can, this can get really expensive
10 . Field flipping can be done but check if you are good with that first
11. Sleeping is your friend. Do what you need each day and roll into the next day
12. Be careful not to grow too quickly, it is heartbreaking to see your crops wither.
You will not make millions quickly, it will take several in game years to get to a point where you can have the biggest and best but once you get there, you can build huge revenue quickly.