I think starting out with budget lenses is not all that bad. having the 18-55, 55-250, and 50 f/1.8 is a nicely rounded starting point I think... After you've got those, you can keep yourself entertained until you can afford better stuff... and all together, they can be had for under $500, for sure. Plus, shooting lots of different things allows you to figure out what you enjoy/do the most. I thought for the longest time that I would get the 70-200 f2.8 next, but I think I'm going to get the 17-55f2.8 instead. I use that focal length range WAY more than anything else, and I'm pretty happy with my 55-250 anyway.