I must be a glutton for punishment but I will take the bait and respond as best I can to Pollaidh's (noting the Gaelic spelling) suggested 'need to knows' because she (and Roses and others) are showing a genuine interest.
1) I agree with the proviso that the referendum must be held BEFORE the UK formally leaves the EU ie once all the terms and conditions are clear but before the fat lady sings. This is so important because there is no mechanism for ejecting an Independent Scotland whose citizens have expressed their wish to stay in the EU.
2) There is a large body of opinion in the EU which wants Scotland to stay in the EU. Perhaps partly as a poke in the eye to the English (you have to remember that their view is coloured by the vociferous and insulting speeches of Nigel Farage who claimed to speak for England in the EU Parliament) partly because Scotland has by far the biggest percentage of the EU's oil reserves, the best coastal waters for wave power and the such desirable fishing grounds that even the Spanish are prepared to overlook the perceived encouragement to the Catalans if Scotland achieves Independence in order to preserve their access to fishing in the North Sea. I get my information about these issues regularly via Alyn Smith, MEP's Facebook page, often showing video clips of proceedings in the EU Parliament and Committees. I'll bet that none of you saw the coverage of his speech in Rome at the celebration of the anniversary of the founding of the EU. Alyn was the only British MEP who was invited to speak, which he did (partly in Italian!) to great acclaim and much waving of Saltires.
Every Scot will know that when visiting Europe or indeed further afield that they are given a warmer welcome when they are known to be Scottish than they receive when they are thought to be English or British. I suppose this is a historic thing because the English and latterly the British have been at war with the Germans, French, Spanish, Italians and many others over time, whereas Scotland as a country has never instigated war on anyone -
all the famous battles from Largs to Culloden, have been the Scots defending their homeland against invaders.
3) See (1) above. The senior legal bods of the EU have already given their attention to this and have stated that there is nothing that can be done to eject Scotland from the EU if it becomes a sovereign state while still in the EU and that the terms and conditions would remain basically the same as those the UK currently enjoys, including a seat at the top table, with adjustments to levies, number of MSPs, etc commensurate with the population of the new State. The UK and Denmark currently have an agreed dispensation from adopting the Euro. I have no idea if that dispensation would be passed on to Scotland or if they will be deemed to be a NEW member and therefore required to agree to adopt the Euro. Whilst it is true that all new member states must agree to join the Euro Zone there is no timescale attached and no law that the EU can use to force compliance. So several countries have dilly dallied for years and seem to be making no attempt to meet the criteria, others, though keen to join have not met the criteria. Just Google 'EU countries not in the Euro' to prove this is true. An Independent Scotland would not meet the criteria on day one, could not join the Euro for several years, even if it wanted to, because it would need to establish its own Central Bank, and provide several years worth of GDP and other fiscal data before it could even start the process. In short, in or out of the Euro is a complete red herring, something that would be for a Scottish Government to decide (maybe have a referendum
) 10 years or more down the line.
A sudden thought while writing this - it occurs to me that if Scotland remains in the EU when rUK leaves, then Scotland will have the whole of the EU as powerful allies on their side during the negotiations to divvy up the UK assets (including the Bank of England).