The longer you save the more you get out of the coupons as events improve over time.

First of all, you must set your Goals and Targets when it comes to obtaining Power and at the same time, Getting some Ninjas that can help you play and fight better .. Choose who or what ninja you wanna have that is currently on the meta or in the cycles of events .. Let's take Konan[Angel of God] as an example of this topic ..

Getting Konan[Angel of God] might take so much time since her value is high .. Now from this point you've chosen a particular ninja to get (not only ninja but you may also choose an item or cloth), you may now plan on how you will spend your coupons where you c*so get some power but you must also consider that not all your plan might go well and fine and some weeks might put you into frustrations and temptations so you must work in your patience too ..

Keep all you coupons as long as you can, and do not spend even a single coupon .. You may choose to save and collect up to 20k coupons and spend it on an Event where you can get or redeem pieces of your desired item or your target ninja which is Konan[Angel of God] .. At the same time, the reason you save and spend 20k coupons is/if we have Fukurokumaru's Deals on the save week .. Fukurokumaru's Deal is the event where you can get a rebate of one complete ninja with other power-up items like high-level magatamas, Myoboku Gifts or Oils, Charm Packs, Unbound Runes and other more .. But, you might find some weeks where you can see your target ninja without Fukurokumaru's Deals ..

You c*so consider saving and keeping your Coupons everytime the week's cycle doesn't have any good events .. Don't let your temptation get you when you something new and sparkling that is usually on one of the RNG events .. Just like this week, Konohamaru[Shippuden] is tempting me but i resisted it since Konan[Angel of God] is much important for me .. The event Lucky Star Wheel is also a RNG event but it can be also a good event when the items in Redeemable Shop peaks your interest, and usually Ninja Fragments and Power-up items are the ones available in that event, spinning the wheel to get Stars for redeeming items and having a chance to get the RNG ninja is great, it's just hitting two birds with one stone .. Lucky Board is great event too, throwing dices can give you a fixed amount of points and while having points for you to use to redeem items, you c*so get Power-up items or Ninja/SuperSummon Fragments .. Wheel of Fortune is a RNG event too so do not pay attention to this event unless, the rank1 in the wheel ranking is low and reasonable to beat to get Yellow Essence for Treasured Tools .. Treasure of the Sage is a great event too to spend your coupons since all of the items in that event has some great percentage of discount ..

For clothing, you may opt to not spend even for a piece of frag .. You can piece all clothing slowly if you want by just getting its fragments for free from events .. But some clothing might force you to spend, like the older ones (Kimono, Wild West and Youth Sai Uniform) ..

In the end, all i've said is just an example or simplest guide for you to take but you must set your own goals and target .. I hope this helps you even for a little bit ..

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I personally when going for power on another account I only picked up 1 event ninja which was Sailor Sakura. She is a solid ninja, not OP or anything but worked really well for lower levels. Then I saved coupons for Lucky Star (Mind you I never go for the jackpot ninja) and pick up Medium Refines, Myoboku Scrolls and Charm packs last. I usually cap out on the 1st 2 and get like 3 or 4 on the Charms.

So while I spin for stars if I get a event ninja, then awesome if not awesome. That is how I got Edo Deidara and 2nd Hokage on *t.

Then when I no longer need Medium Refines (Still a ways away) I'll focus on buying Adv Refines from Treasure of the Sage at a nice discount. That or Seal Scrolls.

Meanwhile I'll stock up on about 220 Seal Scrolls then go into Jin 1, or LoL treasure as Roshi is a really solid ninja and cloud meta still works decently. My alt is level 78 with 50k power which I hit about a week ago, now I'm going for 60k before level 80 then increase by 10k til I hit 80.

The best moves for a starter are to get level 4-5 magatamas as soon as possible. Since there is konoha gift shop where you can buy them at heavy discount do it until you are with at least move 1 and 2 full of them, then, the first time lucky board appears spend all your coupons there.