A thing to remember here is that these posts are strictly meant for the particular planet position. Like, today we are looking at Venus in Libra, so the description given here may change for you if your Venus is although in the sign of Libra but with conjunction with or aspected by other planets.

So, lets see what Venus can do in Libra without any conjunction or aspect from any other planet. 1st lets see what these 2 things represent --

Venus is beauty, desire and love, liquid money, Venus is beauty, desire and love. Venus is the main significator of marriage. Venus represents girlfriend or wife for a man. Venus is the significator of all relations, may it be husband-wife or mother-daughter. Philosophically speaking, Venus is also the cause of all the sufferings in our life. How? Because Venus represents our desires and we get pain and suffering in our life only when our desires are not fulfilled.

Libra is the 7th sign of zodiac belt, hence it represents the energy and things related with 7th house of horoscope, i.e. market place, business, partnerships, relations etc. Basically Libra is sign of relationships. Libra is consisted of another 2 and half Nakshatra named Chitra, Swati and Vishakha. Libra's lord is Venus.

Libra is not only Venus' own sign but it is also its Mool-Trikona sign. So, Venus feels extra powerful here. Now planet of relationship is now in sign of relationship. Obviously, they will be gravitating towards relations and actually relations are very necessary for them to go through their normal walk of life, but whatever they do, they do it with balancing nature. Even in relationship, they are very balanced. Everything comes naturally to them in relationship. This is where this sign is much better than Venus' placement in Virgo, where person goes in to fault finding mode with their relations. Not only in relationship, but whatever they do in life, they will have a balanced approach to that. They love to live their life in this balance. They remain fair, open-minded and chill people to be with. A very good placement for Venus. They get their best wealth through business. 

Things which may impact Venus' effect in Libra are obviously different Nakshatras Venus may be positioned. If Venus is in Chitra Nakshatra, then Mars will impact Venus results. If Venus is in Swati Nakshatra, then Swati's lord Rahu will impact Venus' result. Similarly, if Venus is in Vishakha Nakshatra, then Jupiter's position will be key factor.

Sign-lord wise, Venus is in its own sign, hence very powerful.