Welcome to the forum, what model of scope are you looking at?  Most of the reviews for the Vortex scope that I have read are good one but I have never used one myself.  I prefer Leupold or Burris scopes on my rifles but there are quite a few others out there that work just as well so it usually comes down to personal preference. 

I'm looking for long-range scopes, can you recommend a series?

I had some bad experiences with Bushnell quite a few years ago and have never tried one since. 

What are you planning on using it for, long range target shooting or hunting?  Also what do you consider long range?  I have never been a fan of the scopes with the target turrets on them for hunting, there are way to many things that you need to do.  First you need a range finder to know the distance, then you need to adjust the dial for the point of impact for the bullet that you are shooting.  If you change bullets you need to readjust the scope at the range for that loaded round.  For hunting I figure that the simpler it is the better it is. 

 I have had problems with Bushnell and Pentax Reticles breaking from recoil  both were on a 338win mag. I have a Leupold VXIII 6.5x20x50AO Fine Duplex and a Vortex Viper 6.5X20X50PA with Dead Hold BDC. IMO the Vortex is every bit as clear as the leupold and half the price. My leupold is on a 338 win mag and the vortex is on my varmint 243 win. Never had any problems with either of these. One thing i have noticed about the vortex is the reticle could be a little thinner, it seems a little thick for my liking compared to the leupold, but the mil dot system seems to work well for me. I am not one who likes a lot of clutter in a scope but the vortex reticle seems OK but like i said the center X could be a little thinner IMO

  I think that the vortex is a good quality scope for the money and would buy another if i needed more scopes.

Your new to hunting, sounds like new to shooting also? I would encourage you to learn to shoot well at normal ranges before extending to long range. Long range shooting is a science of it's own. Long range hunting has little to do with hunting and everything to do with shooting.

For long range shooting I would not consider any scope without turrets and would use the best range finder I could afford. I do not hunt beyond the max point blank range of what ever cartridge I might be using.

So I haven't been back in a while but I've been practicing at a range.  Mid-range for now like Don suggested. Anyway some guys showed me these Hawke scopes and I liked them so I'm thinking about getting my own 1.25-4.5x24 Endurance with a L4 dot reticle. It seems decent; durable and and good in dim light conditions. Is this a good scope for a beginner? 

I have never heard of the Hawke scope. I've never seen a Vortex or many others. I would not pay over a couple hundred max for a scope. In your situation I would stick to well known brands and those from about $150 up to what ever you feel comfortable spending. Think Leupold, Leupold/Redfield, Bushnell, Burris ect. Old companies with good lines of scopes that won't break the band and have solid reputations. Scopes like the Hawke may be very good scopes but don't really have much track record to look back on.