LRS units are a touchy subject so I can see why someone with no uniformed time is confused. Given the thread posted above though....the OP needs to slow down and do some reading.
The short version is they are not SOF though some think they are. They have "Ranger" slots but those are for Ranger school and not "Ranger" as in the 75th. There is also no defined selection process though units run their own so standards will vary. On the Guard side you don't need any experience to enlist into an LRS unit though some units can afford to be selective if they have a pile of prior service applicants. AD is different in their personnel acquisition.
Anyone wishing to join and go LRS needs to understand they aren't given any guaranteed shot at the process. Ranger Opt. 40 and 18x give you a guaranteed chance to pass/ fail, LRS is neither SOF nor offers a "sure thing" to even begin the journey. Good guys, good mission, very valid (when used properly, a whole other thread), but not SOF.
Also, learn to use the Search function and spend some time to browse the forum before asking your questions.