playing celtic tribes
artefacts are managed in the cheifs house. You get them from completing missions, they are randomly earned. I had trouble with this at first as well. if you have them they will be listed when you hit the artefacts button. they are also in your profile tab. to select a artefact to use, tap on the empty spot you want to place it in then tap on the button next to the name of the artefact. they expire after time so keep an eye on them so you always have them to help you. It took me about a month to start collecting them.
your third question was about attacking other villages to gain more resources. This is called farming and it is awesome! In your map tab you will want to find all the free villages in your area and tap on them. select the attack button and use a couple slingers and a cart to attack with. send the attack and in time they will return to you with resources. if you are farming at night send 4 or 5 archers and a cart because the fortifications are stronger then.
http://www.celtictribes.com is the newest site I believe for any guides and faqs.
to get ruins research them in the majic grove.
to get artifacts do daily messions. As for how to use them I'm still tryign to figure that one out.
to attack all you need is the amount of silver and a druid. You can do it by yourself if you want to but I'd advise against it.
Some of us blind or voice over users have come together in game to share information. If anyone is interested, message me. I am Rhudebah1 2 3 4 on USA 4. I can help with gameplay, v/o, or tribal info..