Training the right troops in the 1st village is very important because on that will depend what can you do. What next villages can you noble and how worthy you are for the tribe? It is very important to work together with your tribe and decide what you will do. You can chose few players who will be going more defensive then offensive but you must be sure that they will send you defense when you need it and you will have to help them with offense. Another way is that everyone builds at least some amount of defense troops. It can be very different starting from 100/100 (spears/swords) and ending with 600/600, 1k/1k and the rest would be axes/lc/rams/catapults. I would say it depends on few factors. One of them is how close you are to each other. If you have many players close together then each can have fewer defense troops but if your tribe is very spread out and each player has only few tribe mates who can support him then you need to build more. Also when sending support to someone, don't send it just 1 by 1 but set a landing time when all supports must get to the village. It is easy to kill supports 1 by 1 but if they all arrive at the same time your enemy wont be able to do it and will have to face all the defense at the same time if he will still want to attack you.
I would suggest to concentrate mainly on the offense in first village but don’t forget about defense for you and your tribe mates. Offense is more valuable because you can noble better villages and lc(offensive troops) are the best farmers so they will get you addition resources. You wont be able to defend your village with offensive troops but there are always few tricks which you can use. First of them is counter-attacking. If you know what is attacking you and know when his troops will get back home after hitting your village you can time your troops to hit his village in the same second troops get back. If he is also mainly building offense he wont be able to defend and will lose his troops what will cost him a lot because losing troops in the beginning get you way back. But you should scout his village while his troops are still coming to your village to see that he doesn’t have tribes support or loads of his own defense because if he does and you counter- attack and lose troops it will be you who will suffer. To prevent enemy counter attacking you try not to attack players who are very active if you are not going to noble them. They are horrible farms if they are active and will keep fighting back so you will lose more than gain.
When you are ready to noble a village but are afraid of counter-attacks or think that he can get support from his tribe which you wont be able to kill you should build a noble train (only in coin worlds you can build a noble train while having only 1 village). He wont have the chance to counter because he will be nobled before your troops even get back.