Here are three things that I find you should know before you start your practice.
1. Its an investment when it comes to a membership but as far as other things to get you to do yoga, not much at all. $10 for a basic mat and man those workout clothes you own, that's all you need.
You are doing yoga if the clothes aren't from Houses like Lululemon so CALM DOWN and breath.
People go out of their way to find an expensive mat and yoga clothes only to find that mat still rolled up in the closet or the backseat of their car or the idea of sweating on $100 yogi capri bothers me.
So this is your first time? Rent the mat from the studio that rents mats or purchase a $10 mat, better yet you will know someone who has a mat that doesn't use theirs so borrow it. Why am I telling you this? Yoga is more mental than it is physical. You can talk yourself into buying things but to actually doing something like yoga is WORK so keep it simple and just go from there. Decide can you commit to something atleast once a week or are you just not ready right now?
2. Everyone thinks oh yoga is mainly stretching, it can be till you get to a pose and realize, WTL (where's the love) and you doubt yourself the remainder of class.
Start in a gentle Yoga class, Intro Class, or an Intro series. Beginners can feel like an advanced class, so stick to the gentle and introduction stuff, anything more than that don't. I don't want you to be discouraged or to believe, "Well Yoga is soooo much work", but so is healing from an injury and since you decided for your first class as a Crossfitter you can do a level Four Yoga class. Aye! No Burpees for you!
3. Give yourself Permission to be disappointed. I tell people Yoga is a Life Coach on a mat. Yoga will bring you back to reality, not to put you down and discourage you but to challenge you and ask, "How far are you willing to go?"
Yoga is more than the asanas (poses). Its what happens in those poses. Yoga isn't how far you have to go but how far you have gone. So please be gentle, this is your body an amazing dessert.
a BRING YOUR OWN MAT moment
In her novel White Oleander, Jane Fritch suggests that beauty is something to be used, "like a hammer or a key". Thats your assignment, Pisces. Find practical ways to make your beauty work for you. For example, invoke it to help you win friends and influence people. Put it into action to drum up new opportunities and hunt down provocative invitations. And don't tell me you possess insufficient beauty to accomplish these things. I guarantee you that you have more than enough. To understand why I'm so sure, you may have to shed some ugly definitions of beauty you've unconsciously absorbed from our warped culture. - Rob Brezsny of Free Will Astrology