Yep, as others have said, Get some air in those tires, that alone will give you a sense of accomplishment ;- ). Take a good look-see at tractor for broken parts, -- lines, hoses, cracks, especially engine -- no holes in block? Radiator holding coolant? Check tans fluid level. Then Fuel and engine oil -- drain fuel tank and replace filter (filters?) -- check that manual -- run some fresh fuel through tank while lines are open to flush it out. Fresh engine oil and filter, take a good look at old oil for metal shavings. If everything is looking good, put your battery in and give it several shorts cranks to get things loosened up and oil circulating, and give it another once over, if all is ok, then actually try to start it. Hopefully all goes good and she starts and runs. Then you can go through and change out the rest, trans fluid, hydraulic fluid, coolant, ETC. You got a nice tractor there, good luck with it.