I drink it first thing in the morning added to a smoothie that I make with green superfoods, protein, etc.  This is a perfect way to drink the plain organic Matcha.  To make the plain Matcha as a latte... I always advise to my clients who are trying it for the first time to whisk it in a pot of about 2/3 almond/coconut milk to 1/3 water and bring to a simmer/boil.  I don't advise mixing it with dairy because it minimizes the antioxidant benefits.  If you add pure stevia or coconut nectar (both natural and do not affect the blood sugar) it really helps to create a creamy and delicious treat along with minimizing bitterness. You could also add to your latte cinnamon and/or vanilla for flavor.  

The flavored Matcha Blends... 
The Matcha blends have about 1 tsp Matcha per serving (rounded tablespoon).  Because these are already flavored and sweetened this is actually the best for making a hot latte.  You simply whisk 1/2-1 Tbsp of the flavor of choice into a pan with 1-2 cups of part milk and part water and heat, that is all.  They do taste great in smoothies or even drunk cold in a shaker cup with a lid and almond milk...delicious.

How to use plain Matcha vs. the flavored Matcha Blends...   
I would advise adding the plain matcha to your shake every morning and then late morning and/or afternoon drink the flavored blend.  I always advise to clients trying to lose weight to drink a flavored Matcha blend about 1/2 hour after lunch to aid in digestion and cleansing; and again late afternoon for energy and to help curb the appetite before dinner.  Even if you can only drink the Matcha 2x/day it will still be affective - I always have it in the morning and late afternoon.  The Lemon-Ginger flavor is specifically designed for weight loss and can help facilitate your goals even quicker.

Got Matcha uses only the top 3 leaves of the matcha plant, harvested once a year from organic volcanic soil in Kagoshima, Japan. This ensures superior quality, higher L-Theanine, and EGCG content.

As a nutritionist I feel that Matcha is one of the few foods in nature that definitely assists the body with weight loss.  I recommend Matcha tea to all of my weight loss clients and it truly makes a difference while improving health and energy simultaneously.  After having both of my sons I was unable to work out to help burn off the post-baby weight but through healthy eating and drinking 3 servings of Matcha every day I was back to my normal weight within the first 4 months.  The key with Matcha is to be diligent with it .  If you randomly have a cup of Matcha every other day then all it will do is provide energy along with the other health benefits but it will not facilitate weight loss.  At minimum you should have 1/2-1 tsp of Matcha twice per day;  ideally 3 servings daily will have the biggest impact on your metabolism and fat storage cleansing.  After 3-4 weeks you will begin to notice a difference but don't expect to lose 15 pounds in one month.  Matcha works gradually and naturally and is a long term solution.

I generally don't recommend Matcha for kids before they are in their teens unless they are doing intense training for a sport or something and use Matcha prior for energy.  It is not that the Matcha will harm a child by any means but the amount of energy and endurance that Matcha provides, for up to 4 hours, is generally more than children need and if anything they usually have too much energy.  Because Matcha helps to increase the metabolism and aid in natural cleansing, that is another reason to be careful with kids, even teenagers unless they are overweight.  Of course always check with your pediatrician first before introducing anything new such as Matcha.

Matcha green tea is considered a whole food product - the special Matcha tea leaves are dried and ground into a powder. This is a powder that dissolves into liquid. Although Matcha is a distant relative to traditional steeped green tea leaves this is a completely different food. With Matcha you are drinking a whole food that is packed with so many vitamins, minerals, nutrients, antioxidants and even amino acids that it could literally sustain your body energetically and nutritionally for hours at a time. Matcha, which means "powdered tea", is made from aged green tea leaves which are then harvested, steamed and dried. They are later ground into a fine bright green powder, known as Matcha.