To prune, just remove any dead, dying, damaged and diseased stems and also deadhead regularly.
Traditionally, you would cut just above a leaf joint with a sloping cut away from the bud, however, this isn't necessary, and don’t worry about pruning too much - roses are very resilient and will grow back.
When pruning, make sure that your secateurs are clean and sharp to prevent squashing stems and introducing disease.Add mycorrhizal fungi to the roots when planting to help the plant establish quicker.
Roses can be planted at any time of the year, as long as the soil is not frozen, waterlogged or drought-dry. Plant your rose where it can get plenty of sun for at least half of the day, and where it will be sheltered from the wind.
Roses tolerate wide range of soils but thrive in deep, humus-rich, moist but well-drained soil, so add plenty of well-rotted manure into the hole if necessary and plant so that the graft union (the swollen area when the stems meet the roots) is around 3cm below soil level. Water well every other day - daily if the weather is hot and dry.
Established roses can be watered around once a week through spring and summer - more if the weather is hot.
For best results, feed roses in in late-March/April and again late July.